﻿/*
 * Copyright 2012 Rene Prost, Registrite ja Infosüsteemide Keskus 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
using System;
using System.Diagnostics;

namespace Xtee.Core
{
    public interface IPreciceTimeOfDay
    {
        DateTime Resolve();
    }

    public class PreciseTimeOfDay : IPreciceTimeOfDay
    {
        private static readonly Stopwatch Stopwatch = Stopwatch.StartNew();
        private static readonly DateTime StartTime = DateTime.Now; 
        private static readonly object _lock = new object();
        public DateTime Resolve()
        {
            lock (_lock) //ensure multiple threads cannot access same time
            {
                return StartTime.Add(Stopwatch.Elapsed); 
            }
           
        }
    }
}